[PERDITION-USERS] Adding complexity to an existing deployment

I've got an existing Perdition proxy that I need to clone, and layer on some more complexity to. The existing setup uses a simple regex setup to farm incoming connections to different servers based on username. Conf: map_library /usr/local/lib/libperditiondb_posix_regex.so.0 inetd_mode popmap.re ^[0-9]: num.mail.domain.com ^[a,A]: a.mail.domain.com ^[b,B]: b.mail.domain.com etc, etc Users login with just a username, no domain info is present in their login. The mailservers they're directed to don't expect domain info in the login. What I've been asked to do on the new server is to require users to login as user(a)domain.com and I have to bolt in support for a couple dedicated subdomains. My current conf: map_library /usr/local/lib/libperditiondb_posix_regex.so.0 S remote_login popmap.re: (^[0-9])(a)domain.com: num.mail.domain.com (^[a,A])(a)domain.com: a.mail.domain.com (^[b,B])(a)domain.com: b.mail.domain.com ... (.*)(a)subdomain1.domain.com: subdomain1.domain.com (.*)(a)subdomain2.domain.com: subdomain2.domain.com The subdomain entries work. The massaged load distribution regexs from the original setup fail noting that perdition couldn't determine a proper outbound server. Anyone have suggestions for a cleaner regex to try? Josh C